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Modeling of the non-uniform Jc distribution along the c-axis of seeded melt growth (RE)BCO bulks
Loïc Quéval  1@  , Guangtong Ma  2  , Wenjiao Yang  3  , Kun Liu  3  
1 : Laboratoire Génie électrique et électronique de Paris  (GeePs)  -  Website
CentraleSupélec, Centre National de la Recherche Scientifique : UMR8507, Sorbonne Université, Université Paris-Sud - Paris 11
11, rue Joliot CuriePlateau de Moulon91192 Gif sur Yvette -  France
2 : Applied Superconductivity Laboratory, State Key Laboratory of Traction Power, Southwest Jiaotong University
3 : Applied Superconductivity Laboratory, State Key Laboratory of Traction Power, Southwest Jiaotong University

(RE)BCO bulks prepared by seeded melt growth process have a non-uniform local critical current density distribution along the c-axis. To clarify its impact, we measured the levitation force of such bulk above a permanent magnet in two configurations: bottom seed and top seed. This is only by considering a non-uniform critical current density distribution, that we were able to reproduce both measurements with an H-formulation finite element model.



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